Bearing assembly for a roll

Abstract

In a bearing assembly for a roll the journal of the roll is supported radially by roller bearings mounted in a stationary support structure. The thrust bearing for the assembly includes a pair of outer rings mounted co-axially at the end of the journal, and a central ring therebetween and supported by the support structure. The rings define a pair of races for tapered roller bearings. The surfaces of the central disk extend normal to the axis of the journal. A support for the central ring includes a bolt co-axial with the journal and extending into a recess at the end of the journal. Apertures are provided in the structure to permit the flow of cooling air at the end of the assembly.

What is claimed is: 
     
       1. In a bearing assembly for a roll including a supporting member, roller bearing means mounted in said support member for radially supporting the journal of said roll, and bearing means mounted on said support member for axially supporting said journal comprising first and second outer housing rings and a central shaft ring therebetween and co-axial with said journal, said rings defining first and second races, and tapered roller bearings assembled in said races, the improvement wherein said first and second outer housing rings are affixed to said journal of said roll, and further comprising means mounted on said support member for supporting said central shaft ring. 
     
     
       2. The bearing assembly of claim 1 wherein said means mounted on said support member for supporting said central shaft ring comprises a cylindrical bolt axially extending into said bearing means for axially supporting said journal. 
     
     
       3. The bearing assembly of claim 2 further comprising a flange cover affixed to said support member adjacent the end of said journal, said flange cover having a central aperture, said cylindrical bolt extending into said aperture and being held therein. 
     
     
       4. The bearing assembly of claim 1 further comprising a cover member affixed to the end of said journal, said cover member having a hub, and a bore in said hub, said first and second outer housing rings being assembled in said bore of said hub. 
     
     
       5. The bearing assembly of claim 4 wherein the end face of said journal has a concentric recess, said hub of said cover extending at least partly into concentric recess. 
     
     
       6. The bearing assembly of claim 1 wherein said central shaft ring has inner and outer plane surfaces extending in planes normal to the rotational axis of said journal, whereby said tapered roller bearings roll on said plane surfaces. 
     
     
       7. The bearing assembly of claim 4 wherein said support member has a bore concentric with said journal, further comprising sealing means between the outer periphery of said cover and said bore of said support member. 
     
     
       8. The bearing assembly of claim 4 further comprising sealing means between the end of said hub away from said journal and said means mounted on said support member for supporting said central shaft ring, said means for supporting said central shaft ring comprising a cylindrical bolt extending co-axially through said bearing means for axially supporting said journal. 
     
     
       9. The bearing assembly of claim 4 further comprising radially extending ribs on the face of said cover away from said journal. 
     
     
       10. The bearing assembly of claim 9 further comprising a flange cover on said support member adjacent said face of said first mentioned cover, said flange cover having a first plurality of radially outer apertures and second plurality of radially inner apertures extending therethrough, whereby air may be directed by said ribs to flow through said apertures and in the intermediate space between said flange and said first mentioned cover. 
     
     
       11. The bearing assembly of claim 10 wherein said means for supporting said central shaft ring comprises a cylindrical bolt affixed to said flange cover and extending co-axially into said bearing means for axially supporting said journal, said cylindrical bolt having an axially extending aperture, and radially extending apertures communicating with said axially extending aperture, said radially extending apertures communicating with said intermediate space. 
     
     
       12. The bearing assembly of claim 11 wherein said flange cover has a hub through which said cylindrical bolt extends, the face of the hub of said flange cover toward said journal having radially extending grooves communicating between said intermediate space and said radially extending apertures of said cylindrical bolt.